B1702: Driver Seat Recline Switch Open Circuit
The B1702 code indicates that the driver seat control module has detected an open circuit in the forward recline switch circuit. This switch is part of the power seat adjustment system and sends a variable voltage signal to the seat control module when the recline function is activated. An open circuit means there is a break in electrical continuity between the switch and the module, preventing the signal from being received correctly. The system continuously monitors resistance or voltage in this circuit; when it detects out-of-range values due to loss of continuity, it stores this body code.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty or internally worn driver seat recline switch
- Open or broken wiring between the switch and seat control module
- Corroded, oxidized, or loose pins in the switch connector
- Faulty seat control module (ECU) with internal signal detection failure
- Blown fuse in the seat system power circuit
3. Symptoms You Will Notice
- Driver seat forward recline function inoperative
- Seat may not move in any direction if related circuits are affected
4. Step-by-Step Diagnosis
Check for blown fuses in the seat power circuit and replace if necessary.
Inspect the recline switch connector for corrosion, damage, or loose pins.
Test the recline switch for continuity and proper operation using a multimeter.
Check wiring between the switch and seat control module for opens or shorts.
If all else is normal, test the seat control module for proper signal detection.
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, the vehicle is safe to drive. The seat may not recline forward, but this does not affect drivability or safety.
How much does it cost to fix?▼
Repair costs typically range from $100 to $300, depending on whether the switch, wiring, or module needs replacement.